{"product_id":"mr3121-2rs-full-complement-ceramic-bearing-21","title":"Full Ceramic Sealed Ball Bearing Zirconia ZrO2 21.5x31x7mm Full Complement 2RS High-Precision Bearing For Lightweight Durable Smooth Operation In Precision Machinery And Upgraded Applications","description":"\u003cdiv\u003ePremium Ceramic Ball Bearing MR3121-2RS 21.5x31x7 (Single)\u003cbr\u003e\n✔️ Full ceramic ZrO2 seal, 21.5mm ID, 31mm OD, 7mm width \u003cp\u003eThis full ceramic MR3121-2RS bearing uses zirconia (ZrO2) for the balls and races, delivering dry-running performance with excellent wear resistance. Sized at 21.5 x 31 x 7 mm, it’s a solid choice for precision machinery, robotics, CNC tooling, and medical devices where low friction and long life matter.\u003c\/p\u003e \u003cp\u003e✅ Inner diameter: 21.5 mm (0.846 in)\u003cbr\u003e✅ Outer diameter: 31 mm (1.22 in)\u003cbr\u003e✅ Width: 7 mm (0.276 in)\u003cbr\u003e✅ Material: ZrO2 ceramic, full-complement, PTFE seals\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a ceramic sealed ball bearing used for in precision machinery and automation?\u003c\/p\u003e\n\u003cp\u003eThey are handy in automated systems where smooth, accurate motion matters.\u003c\/p\u003e\n- pillow block bearing applications in robotics and automation\n- sealed ceramic bearings for high-speed spindles and clean environments\n- zirconia ceramic bearings offer low friction and corrosion resistance \u003cp\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":43545616908523,"sku":"Kit8448","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/mr3121-2rs-full-complement-ceramic-bearing-21-5x31x7-zro2-bearings-vxb-ball-bearings.jpg?v=1770442355","url":"https:\/\/vxb.com\/products\/mr3121-2rs-full-complement-ceramic-bearing-21","provider":"VXB Bearings","version":"1.0","type":"link"}